阅读说明：本技术 面向夹持式车辆搬运器的双自锁夹持装置及其夹持方法 (Double-self-locking clamping device for clamping type vehicle carrier and clamping method thereof ) 是由 李其朋 陈岁繁 赵超 梁明 邹俊 李培庆 于 2019-11-29 设计创作，主要内容包括：本发明公开了一种面向夹持式车辆搬运器的双自锁夹持装置及其夹持方法,由两个相同的夹臂模块对称布置,同步动作来完成对物体的双自锁夹持,每个夹臂模块均包括上下两块对称布置的底板以及对称安装在上下两底板之间的两个双自锁夹持机构,两底板通过螺栓固接在一起,双自锁夹持机构包括安装在下底板上的电动滑台结构、四杆限位结构、弹簧圆柱锁紧结构和夹臂,电动滑台结构通过四杆限位结构和弹簧圆柱锁紧结构的配合驱动夹臂的展开和收回并实现夹臂展开时的双重自锁。本发明利用四杆限位结构与弹簧圆柱锁紧结构相结合实现夹臂展开时的双重自锁,使得各受力零件间接触面积增大、受力分配更加合理均匀,保证夹持式搬运器夹持轮胎的可靠性。(The invention discloses a double self-locking clamping device facing a clamping type vehicle carrier and a clamping method thereof. The invention realizes double self-locking when the clamping arm is unfolded by combining the four-rod limiting structure and the spring cylinder locking structure, so that the contact area between each stressed part is increased, the stress distribution is more reasonable and uniform, and the reliability of clamping the tire by the clamping type carrier is ensured.)

1. The utility model provides a towards two auto-lock clamping device of centre gripping formula vehicle carrier which characterized in that: the double-self-locking clamping device is characterized in that two same clamping arm modules are symmetrically arranged, synchronous action is performed to complete double self-locking clamping of an object, each clamping arm module comprises an upper bottom plate and a lower bottom plate which are symmetrically arranged, and two double self-locking clamping mechanisms which are symmetrically arranged between the upper bottom plate and the lower bottom plate, the two bottom plates are fixedly connected together through bolts, each double self-locking clamping mechanism comprises an electric sliding table structure, a four-rod limiting structure, a spring cylinder locking structure and clamping arms which are matched with the four-rod limiting structure and the spring cylinder locking structure, and the electric sliding table structure drives the expansion and the recovery of the clamping arms through the matching of the four-rod limiting structure and the spring cylinder locking structure and realizes double self-locking.

2. A dual self-locking clamp device for clamp-on vehicle carriers as claimed in claim 1, wherein: the four-rod limiting structure comprises a first connecting rod, a side link, a fixed rod and a second connecting rod;

the spring cylinder locking structure comprises a locking cylinder, a return spring, a pushing spring, a limiting block and a third sliding block;

the electric sliding table structure comprises a motor, a speed reducer, a first sliding block, a screw rod, a sliding table and a second sliding block;

the clamping arm is rotatably connected to the lower bottom plate through a rotating shaft;

the motor, the speed reducer and the sliding table are fixedly connected together through bolts and are fixed on the lower bottom plate through bolts,

the first sliding block is pushed by a lead screw to move on the sliding table, the second sliding block is connected to the inside of the first sliding block in a sliding mode, the second sliding block is hinged to one end of the first connecting rod through a bolt, the other end of the first connecting rod, one end of the side link and one end of the second connecting rod are hinged together through a pin shaft, the other end of the side link is fixed to the lower base plate through a fixing rod, and the other end of the second connecting rod is hinged to the clamping arm through a pin shaft;

the third sliding block slides on the sliding table under the combined action of the first sliding block and the return spring, the return spring is sleeved on the lead screw and is fixedly connected with the third sliding block, the two pushing springs are symmetrically fixed on the third sliding block, the pushing springs and the return spring are fixed on the same side of the third sliding block, and the tail ends of the pushing springs are fixedly connected with the locking cylinder.

3. A dual self-locking clamp device for clamp-on vehicle carriers as claimed in claim 2, wherein: and a limiting column is arranged at the movement limit position of the side link, so that the four-rod limiting structure is prevented from moving over the position, and the locking reliability is ensured.

4. A dual self-locking clamp device for clamp-on vehicle carriers as claimed in claim 2, wherein: when the clamping arm extends to a certain position, the acting force of the second connecting rod and the side link is on the same straight line to form a two-force rod which is positioned at a dead point position to realize self-locking.

5. A dual self-locking clamp device for clamp-on vehicle carriers as claimed in claim 2, wherein: the cylindrical surface of the clamping arm is provided with a hole, and under the action of the pushing spring, one part of the locking cylinder is positioned in the hole of the sliding table, and the other part of the locking cylinder is positioned in the hole of the cylindrical surface of the clamping arm.

6. A clamping method of a double self-locking clamping device for a clamp-on vehicle carrier as claimed in claim 2, wherein:

in the initial state, all the clamping arms are in a furled state, when clamping is needed, four double-self-locking clamping mechanisms simultaneously act, a motor is powered on, a first slide block slides on a sliding table under the pushing of a lead screw, a second slide block moves under the pushing of the first slide block and is connected with a first connecting rod hinged on the second slide block, when the first slide block moves to a third slide block, the third slide block can be pushed to move to a limiting block together, a reset spring is continuously compressed in the process, the push spring is pushed out by the pushing of the third slide block to push a locking cylinder to a cylindrical surface of the clamping arms, when the second slide block reaches a needed position, the clamping arms completely extend out, the stress of the second connecting rod and a connecting frame rod forms a two-force rod, the four-rod limiting structure is in a dead point position to form self-locking, meanwhile, one part of the locking cylinder which is pushed against the cylindrical surface of the clamping arms enters a, the two locking structures form double self-locking;

when the clamping device retracts, the four double-self-locking clamping mechanisms act simultaneously, the first sliding block moves back on the sliding table under the action of the lead screw, the third sliding block drives the pushing springs and the locking cylinders on two sides to move out of the clamping arm holes under the action of the reset spring, the second sliding block is static relative to the sliding table under the action of the four-rod limiting structure in the process, the second sliding block slides relative to the first sliding block at a certain distance, and when the first sliding block moves to be in contact with the second sliding block, the second sliding block acts on the four-rod limiting structure through the first connecting rod under the pushing of the first sliding block, so that the clamping arm retracts.

Technical Field

The invention relates to a part of a vehicle carrier, in particular to a double self-locking clamping device facing a clamping type vehicle carrier and a clamping method thereof.

Background

The clamping device of the existing clamping type vehicle carrier mainly comprises a worm gear, a hydraulic pressure or a cam and other mechanisms. However, when the worm gear mechanism (such as CN204457020U and CN 106703490A) and the cam mechanism (such as CN 206346543U) are locked, the stress on the gear teeth is large, the mechanism is easy to be damaged, and the hydraulic mechanism (such as CN 203008460U) is easy to leak after long-term operation and is unreliable in operation.

Disclosure of Invention

In order to solve the defects and shortcomings in the prior art, the invention provides the double-self-locking clamping device facing the clamping type vehicle carrier and the clamping method thereof, which are used for increasing the contact area between stressed parts and ensuring the reliability of clamping a tire by a clamping type carrier by combining the dead point self-locking and the locking cylinder self-locking of a four-rod limiting structure.

The technical scheme of the invention is as follows: the utility model provides a two auto-lock clamping device towards centre gripping formula vehicle carrier, by two the same arm lock module symmetrical arrangement, the double auto-lock centre gripping to the object is accomplished in the synchro action, every arm lock module all includes two upper and lower symmetrical arrangement's bottom plate and two auto-lock fixture of symmetry installation between two upper and lower bottom plates, two bottom plates pass through the bolt rigid coupling together, two auto-lock fixture are including installing the electronic slip table structure on the bottom plate, four-bar limit structure, spring cylinder locking structure and the arm lock of cooperation four-bar limit structure and spring cylinder locking structure, electronic slip table structure drives the expansion of arm lock and withdraws and realize the dual auto-lock when the arm lock expandes through the cooperation of four-bar limit structure and spring cylinder locking structure.

The invention realizes double self-locking when the clamping arm is unfolded by combining the dead point self-locking and the locking cylinder self-locking of the four-rod limiting structure, thereby not only ensuring the stability and the reliability of the clamping arm when the clamping arm is unfolded, but also increasing the contact area among all stressed parts, leading the stress distribution to be more reasonable and uniform and ensuring the reliability of the clamping type carrier for clamping the tire.

Preferably, the four-bar limiting structure comprises a first connecting bar, a side link, a fixed bar and a second connecting bar;

the spring cylinder locking structure comprises a locking cylinder, a return spring, a pushing spring, a limiting block and a third sliding block;

the electric sliding table structure comprises a motor, a speed reducer, a first sliding block, a screw rod, a sliding table and a second sliding block;

the clamping arm is rotatably connected to the lower bottom plate through a rotating shaft;

the motor, the speed reducer and the sliding table are fixedly connected together through bolts and are fixed on the lower bottom plate through bolts,

the first sliding block is pushed by a lead screw to move on the sliding table, the second sliding block is connected to the inside of the first sliding block in a sliding mode, the second sliding block is hinged to one end of the first connecting rod through a bolt, the other end of the first connecting rod, one end of the side link and one end of the second connecting rod are hinged together through a pin shaft, the other end of the side link is fixed to the lower base plate through a fixing rod, and the other end of the second connecting rod is hinged to the clamping arm through a pin shaft;

the third sliding block slides on the sliding table under the combined action of the first sliding block and the return spring, the return spring is sleeved on the lead screw and is fixedly connected with the third sliding block, the two pushing springs are symmetrically fixed on the third sliding block, the pushing springs and the return spring are fixed on the same side of the third sliding block, and the tail ends of the pushing springs are fixedly connected with the locking cylinder.

The structure ensures that each part has compact and firm structure, firm and reliable connection and stable and reliable interaction.

Preferably, the motion limit position of the side link is provided with a limiting column, so that the four-bar limiting structure is prevented from moving over the position, and the locking reliability is ensured.

The structure ensures the motion stability and reliability of the four-rod limiting structure, thereby further ensuring that the four-rod limiting structure drives and locks the clamping arm more stably and reliably.

Preferably, when the clamping arm extends to a certain position, the acting force of the second connecting rod and the side link is on the same straight line to form a two-force rod which is positioned at a dead point position to realize self-locking.

The four-rod limiting structure of the structure is more stable and reliable in locking the clamping arm.

Preferably, the cylindrical surface of the clamping arm is provided with a hole, and under the action of the pushing spring, one part of the locking cylinder is arranged in the hole of the sliding table, and the other part of the locking cylinder is arranged in the hole of the cylindrical surface of the clamping arm.

The structure ensures that the spring cylinder locking structure can lock the clamping arm more stably and reliably.

A clamping method of a double self-locking clamping device facing a clamping type vehicle carrier,

in the initial state, all the clamping arms are in a furled state, when clamping is needed, four double-self-locking clamping mechanisms simultaneously act, a motor is powered on, a first slide block slides on a sliding table under the pushing of a lead screw, a second slide block moves under the pushing of the first slide block and is connected with a first connecting rod hinged on the second slide block, when the first slide block moves to a third slide block, the third slide block can be pushed to move to a limiting block together, a reset spring is continuously compressed in the process, the push spring is pushed out by the pushing of the third slide block to push a locking cylinder to a cylindrical surface of the clamping arms, when the second slide block reaches a needed position, the clamping arms completely extend out, the stress of the second connecting rod and a connecting frame rod forms a two-force rod, the four-rod limiting structure is in a dead point position to form self-locking, meanwhile, one part of the locking cylinder which is pushed against the cylindrical surface of the clamping arms enters a, the two locking structures form double self-locking;

when the clamping device retracts, the four double-self-locking clamping mechanisms act simultaneously, the first sliding block moves back on the sliding table under the action of the lead screw, the third sliding block drives the pushing springs and the locking cylinders on two sides to move out of the clamping arm holes under the action of the reset spring, the second sliding block is static relative to the sliding table under the action of the four-rod limiting structure in the process, the second sliding block slides relative to the first sliding block at a certain distance, and when the first sliding block moves to be in contact with the second sliding block, the second sliding block acts on the four-rod limiting structure through the first connecting rod under the pushing of the first sliding block, so that the clamping arm retracts.

The invention realizes double self-locking when the clamping arm is unfolded by combining the dead point self-locking and the locking cylinder self-locking of the four-rod limiting structure, thereby not only ensuring the stability and the reliability of the clamping arm when the clamping arm is unfolded, but also increasing the contact area among all stressed parts, leading the stress distribution to be more reasonable and uniform and ensuring the reliability of the clamping type carrier for clamping the tire.

Drawings

FIG. 1 is a schematic structural view of a dual self-locking clamping mechanism according to the present invention;

FIG. 2 is a schematic structural view of a four-bar spacing structure according to the present invention;

FIG. 3 is a schematic structural diagram of a spring cylinder locking structure according to the present invention;

FIG. 4 is a schematic structural view of the clamping arms of the dual self-locking clamping mechanism of the present invention when they are closed;

FIG. 5 is a schematic structural view of the double self-locking clamping mechanism of the present invention when the clamping arms are unfolded and locked;

FIG. 6 is a schematic structural view of the dual self-locking clamping mechanism of the present invention when the locking cylinder is retracted;

FIG. 7 is a schematic structural view of the clamping arm of the dual self-locking clamping mechanism during the process of folding;

FIGS. 8 and 9 are schematic views of the present invention applied to a vehicle carrier;

in the figure, 1, an electric sliding table structure, 2, a four-rod limiting structure, 3, a spring cylinder locking structure, 4, a clamping arm, 5, a lower base plate, 6, a rotating shaft, 11, a motor, 12, a speed reducer, 13, a first sliding block, 14, a lead screw, 15, a sliding table, 16, a second sliding block, 21, a first connecting rod, 22, a connecting rod, 23, a fixing rod, 24, a limiting column, 25, a second connecting rod, 31, a locking cylinder, 32, a return spring, 33, a pushing spring, 34, a limiting block and 35, and a third sliding block are arranged.

Detailed Description

The present invention will be described in further detail with reference to the attached drawings, but the present invention is not limited thereto.

As shown in fig. 1-5, a novel dual self-locking clamp device for a clamp-type vehicle carrier, the clamping device is characterized in that two same clamping arm modules are symmetrically arranged and synchronously act to complete double self-locking clamping on an object, each clamping arm module comprises a bottom plate component, the bottom plate is by upper and lower two bottom plate symmetrical arrangement, two bottom plate accessible bolt rigid couplings are in the same place, fixed mounting has two mutual symmetrical double-self-locking fixture between two bottom plates, every double-self-locking fixture is including installing electronic slip table structure 1 on bottom plate 5, four-bar limit structure 2, spring cylinder locking structure 3 and cooperation four-bar limit structure 2 and spring cylinder locking structure 3's arm lock 4, electronic slip table structure 1 drives the expansion of arm lock 4 and withdraws and realize the dual auto-lock when arm lock 4 expandes through four-bar limit structure 2 and spring cylinder locking structure 3's cooperation. The electric sliding table structure 1 comprises a motor 11, a speed reducer 12, a first sliding block 13, a lead screw 14, a sliding table 15 and a second sliding block 16; the four-bar limiting structure 2 comprises a first connecting bar 21, a side link 22, a fixed bar 23 and a second connecting bar 25; the spring cylinder locking structure 3 comprises a locking cylinder 31, a return spring 32, a pushing spring 33, a limiting block 34 and a third sliding block 35; the motor 11, the speed reducer 12 and the sliding table 15 are fixedly connected together through bolts and fixed on the lower base plate 5 through bolts, the first slider 13 is pushed by the lead screw 14 to move on the sliding table, the second slider 16 can freely slide in the first slider 13 for a certain distance, the second slider 16 is hinged with the first connecting rod 21 through bolts, the first connecting rod 21, the connecting link 22 and the second connecting rod 25 are hinged together through a pin shaft, the other end of the connecting link 22 is fixed on the lower base plate 5 through the fixing rod 23, the second connecting rod 25 is hinged with the clamping arm 4 through a pin shaft, and the clamping arm 4 is rotatably connected on the lower base plate 5 through the rotating shaft 6. When the clamping arm 4 extends to a certain position, the acting force of the second connecting rod 25 and the side link 22 is on the same straight line to form a two-force rod, so that self-locking is realized. In order to prevent the four-bar limiting structure from moving over the position, a limiting column 24 is arranged at the movement limit position of the side link 22 to ensure the locking reliability. The first sliding block 13 and the third sliding block 35 slide on the sliding rails, and the sliding of the third sliding block 35 is realized under the combined action of the first sliding block 13 and the return spring 32. The reset spring 32 is sleeved in the screw 14 and fixedly connected with the third slider 35, the push spring 33 is symmetrically fixed on the third slider 35, the push spring 33 and the reset spring 32 are both fixed on the same side of the third slider 35, the tail end of the push spring 33 is fixedly connected with the locking cylinder 31, a hole is formed in the cylindrical surface of the clamping arm 4, under the action of the push spring 33, one part of the locking cylinder 31 is located in the hole of the sliding table 35, the other part of the locking cylinder 31 is located in the hole of the cylindrical surface of the clamping arm 4, and therefore the rotation of the clamping arm 4 around the rotating shaft 6 is limited and locked.

A clamping method of a double self-locking clamping device facing a clamping type vehicle carrier is characterized in that when in an initial state, all clamping arms are in a folded state (as shown in figure 8), when a motor 11 is powered on, a first slide block 13 slides on a sliding table 15 under the pushing of a lead screw 14, a second slide block 16 is pushed under the pushing of the inner lower side of the first slide block 13, a first connecting rod 21 hinged on the second slide block 16 moves, when the top of the first slide block 13 moves to a third slide block 35, the third slide block 35 is pushed to move to a limiting block 34 together, a return spring 32 is continuously compressed in the process, a pushing spring 33 pushes a locking cylinder 31 out to the cylindrical surface of the clamping arm 4 under the pushing of the third slide block 35, when the second slide block 16 reaches a required position, the stress of the second connecting rod 25 and a connecting rod 22 forms a two-force rod, the limiting structure is in a 'dead point' position to form self-locking, and simultaneously, a part of the locking cylinder 31 which is pressed against the clamping arm, thus, one part of the locking cylinder is arranged in the hole of the clamping arm 4, the other part of the locking cylinder is arranged in the hole of the sliding table 15, and the two locking devices form double self-locking (as shown in figure 9).

When the clamping device is retracted, the first slider 13 makes a return motion on the sliding table 15 under the action of the lead screw 14, so that the third slider 35 drives the pushing springs 33 and the locking cylinders 31 on the two sides to move out of the holes of the clamping arms under the action of the return spring 32 (as shown in fig. 6), in the process, the second slider 16 is stationary relative to the sliding table 15 under the action of the four-bar limiting structure, the second slider 16 only makes a relative sliding motion at a certain distance relative to the first slider 13, and when the inner upper side of the first slider 13 moves to be in contact with the second slider 16 (as shown in fig. 7), the second slider 16 pushes on the inner upper side of the first slider 13 to act on the four-bar limiting structure through the first connecting rod 21 to retract the clamping arms 4.